I can not enter comma in combo box in LV 8.20, but it can be done in LV 8.0.1, so I suppose it's a bug! I can enter comma via Edit Item menu, but I would like to enter it in run time.
This was reported to R&D (CAR ID: 4131FLYN and 40MCJC4U) for further investigation. A possible workaround, like you have stated in your response, would be to do add commas while in edit items for the combo box.
Thanks for the feedback!
Regards,
Nadim Applications Engineering National Instruments